KR101208676B1 - Bell mouth for ship - Google Patents

Abstract

The present invention can improve the ease of manufacture and installation of the bell mouse for ships, can achieve a low cost, light weight and high strength, can effectively improve the problems of the prior art that was susceptible to oxidation corrosion by water or oil, The present invention relates to a ship bell mouse having excellent vibration resistance when sailing, comprising: a main body which is vertically penetrated and formed by upper and lower light beams; It includes a plurality of ribs formed on the lower inner surface of the main body, the flange and the rib, the fiber reinforced composite material (FRP, Fiber Reinforced Plastics) is a fiber material made of a glass fiber or carbon fiber bonded by a multilayer adhesive with an unsaturated polyester resin The flange is formed in a plurality of bolt holes through an outer circumferential surface thereof, When inserted into the interior characterized by bonding a bolt in the bolt holes to secure the pressure on the outer peripheral surface of the connection pipe.

Description

Bell Mouse for Ships {BELL MOUTH FOR SHIP}

The present invention relates to a ship bell mouse for sucking and discharging the cargo or ballast water of the tanker.

Cargo ships intended for the carriage of cargo are designed to simplify and secure residential facilities, to enlarge the docks, and to focus on unloading facilities to transport large quantities of cargo safely and promptly at once.

These cargo ships can be categorized into oil tankers carrying crude oil and petroleum compounds, building ships carrying iron ore and grain, and dual ships carrying two cargoes at the same time.

The oil tanker is a cargo ship that transports the liquid cargo (Cargo) in a vessel such as a drum (Drum) directly, but is shipped in bulk directly in the dock, crude oil transport ship for transporting crude oil, refinery transport ship for transporting refined petroleum products, specific chemical There are chemical carriers for transporting products and gas carriers for liquefying gas.

The tanker is provided with a cargo handling system provided for the handling of liquid cargo, that is, the cargo, as shown in Figure 1 the cargo handling system 10 is located on the left and right sides of the hull 20 as well as in the longitudinal direction Cargo tanks 11 and 12 arranged in a plurality, Cargo tanks (11, 12) are provided for each of the cargo tanks (11, 12) and a plurality of bell mice 13 for sucking and discharging cargo for cargo loading and unloading, and the bell mouse 13 It comprises a connecting pipe (14) connected to the) to provide a passage for unloading cargo.

The bell mouse 13 is used not only for sucking and discharging liquid cargo, that is, cargo in an oil tanker, but also for sucking and discharging sea water, that is, ballast water, for balance of a vessel when sailing a vessel.

The conventional bellows 13 for ships is made of steel, that is, steel, but the manufacturing cost is expensive, and because of the heavy weight, there is a significant inconvenience when transporting, manufacturing, installation and release. In addition, due to the strong flow rate due to the intake and discharge of fluid in the vicinity of the bell mouse 13, it is vulnerable to breakage due to shock and vibration due to cavitation caused by vortex, and in particular, frequent replacement due to short service life due to oxidation corrosion by sea water or oil. There is a problem that must be made.

In addition, vibrations are generated inside the ship due to waves or bad weather during the voyage of the ship, and such vibrations are also transmitted to the bell mouse 13, so that the risk of damage due to the vibration remains.

The present invention has been made to overcome the disadvantages of the prior art as described above, to improve the ease of manufacture and installation of ship bell mouse, and to achieve a low cost, light weight and high strength, to the corrosion of oxidation by water or oil It is possible to efficiently solve the problems of the prior art, which is vulnerable, and to provide a marine bell mouse excellent in vibration resistance when sailing a ship.

Marine bell mouse according to the present invention for achieving the above technical problem, the upper and lower through, the body formed by the upper and lower light beam, the upper surface of the main body, the flange is inserted into the coupling is inserted through the viscoelastic adhesive And a plurality of ribs formed on the lower inner surface of the main body, wherein the main body, the flange, and the ribs are fiber reinforced composite materials (FRP) in which a fiber material made of glass fibers or carbon fibers is bonded by curing with an unsaturated polyester resin in multiple layers. , Fiber Reinforced Plastics) is integrally manufactured, the flange, a plurality of bolt holes are formed through the outer peripheral surface, and when the connector is inserted into the bolt is coupled to the bolt hole to press the outer peripheral surface of the connector It is characterized in that the fixing.

In addition, the viscoelastic adhesive is characterized in that the epoxy.

In addition, the bolt is characterized in that the boltless wrench.

In addition, the connector is characterized in that it further comprises a locking projection protruding inside the upper end of the main body so that the lower end of the connecting tube is caught in the upper end of the main body when inserted into the inside of the flange.

In addition, the locking step is integrally formed by fiber reinforced composites (FRP, Fiber Reinforced Plastics), which is a combination of the main body, the flange and the ribs of the fiber material consisting of glass fibers or carbon fibers, and cured by unsaturated polyester resin Characterized in that produced.

Ship's bell mouse of the present invention having the configuration as described above, by making the body, the flange and the rib integrally made of fiber-reinforced composite material to improve the ease of manufacture and installation of the bell mouse, vibration of the cavitation due to vortex And it can easily withstand the impact load can achieve high strength, low cost and much lower specific gravity can achieve productivity improvement and light weight.

In addition, by inserting the connection pipe through the viscoelastic adhesive to the flange and at the same time bolts to secure the vibration resistance even when the ship sails or bad weather it can be made a firm fixing of the bell mouse for the vessel.

1 is a block diagram of a general marine cargo handling system,
2 is a perspective view showing a first embodiment of a marine bell mouse according to the present invention,
3 is a side cross-sectional view of the embodiment of FIG. 2,
4 is a perspective view showing a second embodiment of a marine bell mouse according to the present invention,
5 is a side cross-sectional view of the embodiment of FIG. 4.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the marine bell mouse according to the present invention.

As shown in Figures 2 to 5, the ship bell mouse according to the present invention comprises a main body 100, a flange 200, ribs 300, may further comprise a locking jaw (400). In addition, the flange 200 includes a bolt hole 201 to which the bolt 202 is coupled.

The marine bell mouse of the present invention is used as a suction or discharge port for sucking and discharging cargo, i.e., liquid cargo, in a cargo handling system of a ship, or for sucking and discharging sea water, i.e., ballast water, for balancing the ship. At this time, the ship bell mouse of the present invention is connected to the pipe (210) and the flange (200) connected to the pump (not shown) the number of cargo or ballast sucked from the ship bell mouse of the present invention is the connection pipe 210 Go through.

2 to 5 of the ship bell mouse of the present invention, the upper and lower through, the main body 100 formed by the upper and lower light and the flange formed so that the connection pipe 210 is coupled to the upper portion of the main body 100 And a plurality of ribs 300 formed on the lower inner surface of the main body 100. The main body 100 has a bottom or a circular oval shape and is manufactured to facilitate the suction and discharge of the fluid. The flange 200 communicates with the upper part of the main body 100, and the connection pipe 210 is inserted into the viscoelastic adhesive ( 220) are combined. Ribs 300 are provided with a plurality of three or four are formed on the lower inner surface of the main body 100, the rib 300 is the fluid sucked to the lower portion of the main body 100 does not rotate, the normal flow is Help make it happen In particular, the rib 300 is formed to protrude downward from the bottom surface of the main body 100 can be fixed while maintaining a certain distance from the bottom surface of the hull, it is easier to intake and discharge the fluid.

The main body 100, the flange 200 and the rib 300 as described above is characterized in that it is made of fiber reinforced composites (FRP: Fiber Reinforced Plastics) excellent in weather resistance, water resistance, oil resistance and oxidation resistance. The fiber-reinforced composite material is a composite material that is cured by bonding a fiber material such as glass fiber or carbon fiber multilayered with a resin, and can be made lighter than a steel material, as well as easy to manufacture and mechanical strength rather than Can be improved. In particular, the fiber-reinforced composite material can adjust the strength according to the type of the fiber material added to the polymer material, and can be manufactured to about 1.6 specific gravity, there is an advantage that can be produced very light compared to the steel material having a specific gravity of 7.85. That is, the ship bell mouse made of the fiber-reinforced composite material of the present invention as compared to the ship bell mouse, which is a conventional steel material can secure the convenience of installation and operation at a light weight.

In addition, the material used as a fiber material for forming the fiber-reinforced composite materials include glass fiber, carbon fiber, Kevlar fiber, boron fiber, SiC fiber and Al ₂ O ₃ fiber, the fiber material according to the orientation It is divided into Non-Axial Type which is spread without constant direction, Mono-Axial Type which has one direction, Biaxial Type which has bidirectionality, and Multi-Axial Type which has more direction. The fiber-reinforced composite material has different mechanical properties depending on the material and the orientation of each of the aforementioned fiber materials. In order to form the fiber-reinforced composite material, an unsaturated polyester resin is generally used as the resin for bonding the aforementioned fiber materials in multiple layers.

The marine bell mouse of the present invention moves cargo or ballast water from one place to another through the connection pipe 210 coupled to the suction and discharge of the fluid, the connection pipe 210 is shown in FIGS. As it is inserted into the flange 200 communicated with the upper portion of the main body 100 is coupled via the viscoelastic adhesive 220. At this time, the viscoelastic adhesive 220 is applied to the inner circumferential surface of the flange 200 or the outer circumferential surface of the connecting pipe 210, and then the connecting pipe 210 is inserted into the flange 200. However, the viscoelastic adhesive 220 is not cured immediately, the curing time varies depending on the temperature. Therefore, it is necessary to fix the coupled state of the flange 200 and the connection pipe 210 until the viscoelastic adhesive 220 is cured. That is, the flange 200 is formed through the plurality of bolt holes 201 through the outer circumferential surface, when the connection pipe 210 is inserted into the coupling bolt 202 to the bolt hole 201 to the connection pipe Pressure fixing the outer peripheral surface of (210). Therefore, the connection pipe 210 is inserted into the flange 200 and bonded to each other through a viscoelastic adhesive 220. At this time, the bolt 202 is formed in the bolt hole 201 formed on the outer circumferential surface of the flange 220. By coupling the end portion of the bolt 202 by pressing the outer circumferential surface of the connection pipe 210, and eventually the viscoelastic adhesive 220 is cured in the state in which the connection pipe 210 is inserted into the flange 220 It is possible to achieve a firm coupling of the flange 220 and the connector 210.

In the viscoelastic adhesive 220, viscoelasticity refers to a mechanical property that exhibits elasticity that is inconsistent with rapid deformation due to a load, and viscous flow in slow deformation, and an object having such a characteristic is called a viscoelastic material. That is, the viscoelastic adhesive 220 is generally a viscoelastic adhesive, epoxy-based, silicone-based or urethane-based widely used. Among them, epoxy series is most preferred as a material of the viscoelastic adhesive 220 of the present invention because it has a small weight change rate during curing, excellent durability because there is no torsion or deformation, and excellent durability due to stress change after curing.

The connection pipe 210 is inserted into the flange 220 and coupled by the viscoelastic adhesive 220, and then connected by the bolt 202 coupled through the bolt hole 201 formed on the outer circumferential surface of the flange 220. The pipe 210 is press-fixed, and the bolt 202 may be any bolt as long as it can press the outer circumferential surface of the connecting pipe 210 through the bolt hole 201. However, in the case of the general bolt 201, as shown in Figures 2 and 3, there is a problem that the head is stuck to the bolt 201 that protrudes during external work, such as the head protruding out of the outer peripheral surface of the flange 220, or the appearance is not beautiful. have. To prevent such a problem, the bolt 201 may be inserted into the flange 220 by using a tannery bolt as shown in FIGS. 4 and 5, and the tannery may be easily transferred to the rotational force of the bolt 201. Wrench bolts can be used.

On the other hand, when the connecting pipe 210 is inserted into the inside of the flange 220, the upper end of the main body 100 and the flange 220 is in communication so that the end of the connecting pipe 210 continues to the inside of the main body 100 It can also be inserted. If the connection pipe 210 is inserted into the body 100, the suction of the fluid from the lower end to the upper end of the main body 100 may not be achieved. In order to prevent such a problem at the source and to ensure that the connector 210 can be accurately coupled to the flange 220, the locking jaw 400 is further inserted so that the connector 210 is no longer inserted into the main body 100. It may include. That is, as illustrated in FIG. 5, the locking jaw 400 has a lower end of the connection pipe 210 when the connection pipe 210 is inserted into the flange 200 at an upper end of the main body 100. It is formed to protrude inside the upper end of the main body 100 to be caught. Of course, the end of the connection pipe 210 through the locking jaw 400 as described above is no longer inserted downward caught on the locking jaw 400, and is interposed between the flange 200 and the connection pipe 210. Since the viscoelastic adhesive 220 can not escape the catching jaw 400, it can be used only for adhesion without waste between the flange 200 and the connection pipe 210. At this time, the latching jaw 400 is also a fiber-reinforced composite material that is cured by adhesively bonding the fiber material made of glass fiber or carbon fiber with unsaturated polyester resin together with the main body 100, the flange 200 and the rib 300. (FRP, Fiber Reinforced Plastics) can be manufactured integrally.

Marine bell mouse of the present invention is configured as described above, unlike the conventional steel bell marine vessel is welded, the flange 200 made of fiber-reinforced composite material is connected to the connection pipe 210 and simply the viscoelastic adhesive 220 Bonding with each other at the same time, the bolt is fixed at the same time to prevent leakage or leakage due to poor welding, as well as to achieve a more robust coupling, viscoelastic adhesive (220) even when vibrating due to waves or bad weather when sailing the ship Vibration resistance can be imparted to the coupling of the flange 200 and the connection pipe 210 via.

Looking at the manufacturing and installation method of the ship bell mouse of the present invention, first prepare a frame (not shown) having the shape of the main body 100, the flange 200 and the rib 300, and on the inner surface of the frame After the wax layer is formed, a fiber material such as glass fiber or carbon fiber is hardened by multilayer bonding with a resin, and then the mold is removed. In this case, when the locking jaw 400 is formed at the upper end of the main body 100, the shape of the locking jaw 400 may be added. Next, a plurality of bolt holes 201 are drilled on the outer circumferential surface of the flange 200 and then coated with a gel coat resin (not shown) on the outer surfaces of the main body 100, the flange 200, and the rib 300. In order to enhance the weather resistance, water resistance, oil resistance and oxidation resistance while improving the appearance, the problem of oxidation corrosion by sea water and oil can be improved more efficiently. The bellows for ship of the present invention manufactured as described above is installed in the connection pipe 210, the viscoelastic adhesive 220 is applied to the outer circumferential surface of the connection pipe 210 or the inner circumferential surface of the flange 200, the connection pipe 210 ) Is inserted into the flange 200. Inserted connector 210 is bonded through the flange 200 and the viscoelastic adhesive 220, wherein the fixing the connector 210 inserted in the flange 200 until the viscoelastic adhesive 220 is cured The bolt 202 is coupled to the bolt hole 201 formed on the outer circumferential surface of the flange 200 so that the end of the bolt 202 is press-fixed to the outer circumferential surface of the connecting pipe 210.

As described above, in the detailed description of the present invention, a preferred embodiment of the present invention has been described, but those skilled in the art to which the present invention pertains various modifications can be made without departing from the scope of the present invention. Of course. Therefore, the scope of the present invention should not be limited to the described embodiments, but should be defined not only by the claims below, but also by the equivalents of the claims.

100:
200: flange
201: Bolt hole 202: Bolt
210: connector 220: viscoelastic adhesive
300 rib
400: jamming jaw

Claims (5)

A main body which is vertically penetrated and formed by upper and lower light beams,
A flange in communication with the upper portion of the main body, the connector being inserted to be coupled via a viscoelastic adhesive;
A plurality of ribs formed on the lower inner surface of the main body,
The main body, the flange and the ribs,
The fiber material made of glass fiber or carbon fiber is integrally manufactured by FRP (Fiber Reinforced Plastics)
The flange
A plurality of bolt holes are formed through the outer circumferential surface, and when the connector is inserted into the bolt, the bolt is coupled to the bolt hole to press fix the outer circumferential surface of the connector,
Ship bell mouse further comprises a locking projection protruding inside the upper end of the main body so that the lower end of the connecting tube is caught to the upper end of the main body when the connector is inserted into the flange.
The method of claim 1,
Ship viscous adhesive, characterized in that the viscoelastic adhesive is epoxy.
The method of claim 1,
The bolt
Marine bell mouse characterized in that the boltless.
delete The method of claim 1,
[0028]
Ship body, characterized in that made integrally by the fiber-reinforced composite material (FRP, Fiber Reinforced Plastics) of the fiber material consisting of glass fiber or carbon fiber with the main body, the flange and the ribs by curing a multi-layer adhesive with unsaturated polyester resin Bellemouth.

Images